A qardemer wauts to comstruct a diffent mateYíal of fencine with a area of 830 A; fori2oppasit Side; one material of fameing cost $7 ·Per foot aud the other sides willuse the other maferial costimg #4 per foot. Constraint xy = 830 bjetive: ostlor perimeber = lyx +8y rectany elarfielol emclased by comme 14x +8Y a) the dimeaution Hat wil mini mizethe cast. Riourdol 1 ote eiural. thc mimimiced cost, Rounmo) 2 decimal ploces-

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